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anonymous

  • one year ago

Solve the following system of equations and show all work. y = −x^2 + 4 y = 2x + 1

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  1. anonymous
    • one year ago
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    i know how to solve a normal system of equations but the squared x is confusing me

  2. Haseeb96
    • one year ago
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    consider equation 1 as eq#1 and equation 2 a eq#2 y= -x^2+4 .............eq#1 y=2x+1...................eq#2 now just pput this eq#2 into eq#1 at the place of y

  3. anonymous
    • one year ago
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    2x+1=x^2+4

  4. Haseeb96
    • one year ago
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    no 2x+1 = -x^2+4 x^2+2x-3 =0 now factorize this equation and tell me what you get the value of x ?

  5. Haseeb96
    • one year ago
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    do you know how to do factorization?

  6. anonymous
    • one year ago
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    oohh yes of course you'd get x=-3,1

  7. anonymous
    • one year ago
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    thx lots

  8. Haseeb96
    • one year ago
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    sorry i was wrong @gold.shosho you were correct now plug this x values one by one in eq#2 and get the values of y

  9. nincompoop
    • one year ago
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    so how is the x^2 confusing?

  10. nincompoop
    • one year ago
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    |dw:1436145361053:dw|

  11. anonymous
    • one year ago
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    you're right @nincompoop it just means a parabola

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